import csv
filename="sitka_weather_07-2021_simple.csv"

with open(filename) as f:
    reader=csv.reader(f)
    header_row=next(reader)

    highs=[]
    for row in reader:
        high = int(row[5])#因为CSV文件中用字符串储存数据，所以用int将其转换为数值格式。
        highs.append(high)
        print(high)